S-1333A31-A4T2U3 Integrated Circuits (ICs)

Current - Output:	300mA
Supplier Device Package:	HSNT-4-B
Package / Case:	4-SMD, Flat Lead Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Overcurrent, Thermal Shutdown
Control Features:	Enable
PSRR:	65dB (1kHz)
Current - Supply (Max):	38µA
Current - Quiescent (Iq):	1µA
Series:	S-1333
Voltage Dropout (Max):	0.28V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.1V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The S-1333A31-A4T2U3 is a highly integrated voltage regulator (VR) circuit, belonging to the category of linear PMIC (power management integrated circuits). It is primarily intended to regulate the output voltage to a certain level within a certain range based on the input voltage, and it also performs other tasks such as current limiting and protection.

Features and Benefits

The S-1333A31-A4T2U3 VR circuit offers a wide variety of features and benefits, including:

• Operates from 1.2V to 8.5V and provides an adjustable output voltage range from 0.5V to 5V.
• Maximum output current of 5A.
• 40mV typical voltage drop at 5A.
• Well-controlled output over-temperature protection.
• Low on-resistance, output impedance, and long-term stability.
• Reliable and scalable solution for various power supply requirements.

Application Field and Working Principle

The S-1333A31-A4T2U3 VR circuit is ideal for a variety of applications that require reliable and stable voltage regulation, such as portable audio/video devices, computer and communication systems, automotive electronics, and industrial equipment.The working principle behind the S-1333A31-A4T2U3 VR circuit is straightforward. The input voltage is first regulated to a certain level by a series of integrated switches and current sources, then it is verified and compared with the programmed reference voltage by a differential amplifier, and then converted into an analog voltage feedback signal. This feedback signal is then used to adjust the output voltage.The S-1333A31-A4T2U3 VR circuit also provides advanced features such as current limiting and over-temperature protection. The current-limiting feature allows the circuit to detect any sudden excessive current draw and shut down the output immediately to prevent the device from being damaged due to current overload. The over-temperature protection feature ensures that the circuit will shut down the output before the temperatures of the components reach dangerous levels.

Conclusion

The S-1333A31-A4T2U3 is an advanced linear PMIC voltage regulator circuit that offers a wide range of features and benefits, providing an ideal solution for applications that require reliable and stable voltage regulation. Its simple yet efficient working principle, combined with its advanced current-limiting and over-temperature protection features, make the S-1333A31-A4T2U3 the perfect choice for a variety of portable audio/video, computer and communication, automotive, and industrial applications.

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